Water-heater.



' matically control the supply of steam to 'nnrrnn s rrrrns reenter orrrcn,

WILLIAM J. KIBBY', 01 NEW YORK, IN. Y., ASSIGNOR T0 SPACESAVING APPLIANCE CGMPANY, A CORPORATION OF NEW YORK.

VIATER-HEATER.

Specification of Letters Patent,

Application filed March 24, 1911. Serial No. 615,558.

To all whom it may concern:

Be it known that l, lvIL'L-IAM .l. Kinny, a citizen of the United States of America, residing at New York city, borough of Brooklyn, county of Kings,'ond State of New York, have invented certain new and useful Improvements in lVater-lleaters, oil which the following is a specification.

My invention relates to Water heating apparatus and comprises certain improve ments on. a particular form of apparatus now on the merket'in which aplurality of Water containing pipes run through a plurality of steam pipes, and the unequal expansion and contraction of the two sets of pipes under temperature variations antic-- t is steam pipes. While the system referred to is most eihcient and satisfactory in general operation, its Weakest point is the difficulty of maintaining steam tight joints at the numerous stufing boxes in the steam header through which the Water pipes extend to an exterior Water header. My invention avoids this ditliculty and also increases the efficiency ot the apparatus es 2.- Whole by substituting a water header inside of the steam header, for the exterior Water header heretofore used, and by having one common discharge pipe extend from said water header through a single stutling Qox in the side of the steam headeri The best form of apparatus at present known to me embodying my invention is illustrated in the accompanying sheet of is a detail modification showing a flexible diaphragm.

lie the steam header, 2 the steam supply pipe connected therewith, and 3 a valve in pipe 2. The stem 4 of this valve is pivoted to one end of lever 6. An adjustable spring 5 is also connected to said lever near the same end, and has a pivoted connection to the valve casing. From one side of the steam header 1, extend a'plurality oi? parollel steam pipes 1 7, which, asshown, are screwed into the header, though they might be otherwise fastened. The other ends of these steam pipes are connected to the steam compartment 9, of the compound header 8, by expanding the ends cl. saidpipe into plate 24 on said header, or by'a'ny other convenient method. As shownthis compound header is composed of the box sec tion 23.3,having the covering plate 24: bolted to it, (thus forming steam compartment 9 with steam outlet 10) and the second box section 25, bolted to the other side of section 23, and forming the Water compartment 11, provided with Water inlet 12. Into the partition 14, in the compound header, (formed by the bottom of box section 23) are fastened the ends of a plurality of water pipes 13, 13, which extend through the steam Jipes 7, 7, being of lesser diameter, and r0- ecting from each end thereof. If t ese Water pipes are connected at one end to water header 16, inside of steam header 1, by ordinary screw joints as shown, their other ends can be conveniently fastened to partition 1% by internally and externally threaded nuts 15, 15, which screw on to the pipes and into threaded openings in the' partition.

The whole construction of the compound header serves as a means for holding the set of steam pipes and the set of water pipes, in rigid relation each to the other, at one end, While they are left free to move one over the other at all other points.

From the outer side of the Water header 16 extends a short outlet pipe 17 which passes through a stufiing box 18 on the outer sideot the steam header 1. On the flange 19 on pipe 17, is mounted the slotted car 20, which engages pin 21, on the end of lever 6, ivhich lever is fulcrumed to the steam hes/ lor 1. by adjustable connection 22. Such being the construction, the general principle of operation is that normally steam flows through valve 3, and pipe 2 to header 1, and thence through pipes 7, 7, to steam compartment 9 of header 8, from which it is discharged as Wet steam or water of condensation through outlet 10. Cold water, passing through inlet 12 to Water compartment 11 of compound header 8, flows through Water pipes 13, 13, to water header 16, and then out through common discharge pipe 17, absorbing heat fromthc steam so that it issues as hot Water. "\Vhen the flow of water is stopped, so that-the walcr in the pipes 13, 13 becomes overheated, said pipes also become heated and expand considerably, beii'ig usually made of brass.

' liow of steam or fact, that but one constant temperature by the steam passing through, or trapped in, them, do not contract or expand appreciably. As a result, the heating of the water pipes moves the water header 16 toward the outer sidev of the steam header 1', and projects the single discharge pipe 17 feather through stuffing boi; 18 moving lever 6, compressing spring 5 and closing valve 3. When water is drawn of? and the incoming cold water contracts pipes 13, 13, the water header moves back, the valve 3 is 0 ened by spring 5, and the heating purposes is resumed.

In the modification shown in Fig. 2, an annular fiexiblediaphragm 26, fastened at its outer circumference to flange 27 on steam header 1, and at its inner edge to flanges 28, on pipe 17, takes the place of stuffing box 18.

The advantages of my invention lie in the stufling -box or flexible diaphragmdoes the work of the eight stuffin boxes which would be employed in a heater of this type constructed on the plan employing an external water header, and in the further fact that the efiiciency of the heater is increased, as the water header now becomes a part of the heating surface, while in the other construction, it is awasteful, heat radiating surface, cooling the water passing through it, instead of helping toheat said water, as it does in my construction.

Various changes could be made in the details of construction illustrated herein without "taking the modified construction outside of the scope of my invention, so long as the principles of operation above described are retained.

Having, therefore, described my invention, I claim: v i i 1. The'comhination of a plurality of par- I allelv metal ,steam pipes, a water pipe of lesser diameter formed of a metal having a higher coelficient of expansion when heated, located inside of each of the first mentioned pipes and fastening means holding the two sets of pipes in. rigid relation at one end, a header connec'ting all the steam pipes at one end, a second header of lesser diameter located inside of the first header and connecting allthe outlet connections for the steam pipes and their header and for the water pipes ant their header, a valve in thesteam inlet and mechanism whereby the relative motions of the two headers open and close said valve.

2. The combination ofa plurality of parallel metal steam pipes, a Water pipe of lesser diameter formed of a metal havinga 1 higher coefiicient of expansion when heated,

located inside of each of the first mentioned pipes and fastening means holding the two sets of pipes in rigid relation at one end, a header connecting all the steam pipes at one water pipes together, inletand/ end. a second header of lesser diameter located inside of the first header and connecting all the water pipes together, inlet and outlet connections for the steam pipes and their header and for the Water pipes and their header, a valve in the steam inlet and mechanism whereby the relative motions of the two headers open and close said valve, said mechanism comprising a projection from the water header extending through an opening in the steam header, and a lever pivoted on the steam header, and connected to the projection from the water header and to the valve. v

3. The combination ofa plurality of par- ,allel metal steam pipes, a water pipe of lesser diameter formed of a metal having a higher coeflicient of expansion when heated, located inside of each of the first mentioned pipes and'fastening means holding the two sets of pipes in rigid relation at one end, a header connecting all the steam pipes at one end, a second header of lesser diameter located inside of the first header and connecting all the Water pipes together, inlet and outlet connections for the steam pipes and their header and for the water pipes and their header, a valve in the steam inlet and mechanism whereby the relative motions of the two headers open and close said valve, said mechanism comprising a stuffing box in the side of, the steam header, a pipe connected to the Water headesserving as an outlet therefrom and extending through said stuffing box, and a lever pivoted to the steam header, and having one ,end connected to the said projecting pipe while its other end is connected to the stem of the valve controlling the steam inlet.

4-. In a water heating apparatus the combination of a steam header, a Water header inside of the steam header and free to move therein, means for conducting steam into and out of the steam header, means i'pr conducting, water into and out of the water .header, means for automatically moiri'ng the water header relatively to the steam header when the temperature of the water rises, and echanism operated by such movement to shut oil the flow of steam to the steam header.

5. In a water heating apparatus the combination of a steam header, a water header inside of the steam header and free to move therein, means for conducting steam into and out of the steam header, means for conheader, means for automatically moving the water header relatively to the steam header" when the flow of water through the headpr ceases, and mechanism operated by such movement to shut off the flow of steam to the'steam header, said mechanism comprising a valve in the steam inlet, an opening "in the side of the steam header, a projection ducting water into and out of the Water through, and connections from sai from, the water header extendin thereprojection to the valve stem.

6. In a water heater the combination of a steam header, a series of'parallel pipes connected to one side of the header, a water header inside of the steam header, a series of pipesextending from the watenheader out through the steam pipes, means for passing steam into the steam header, and

means for conducting water into and out of the water header together with a'valve con; trolling the steam connection to the steam header, means for automatically moving the water header relatively to the steam headerv when the temperature of the Water changes,

and mechanism operated by such movements to open or close said Valve.

WILLIAM J. KIBBY.

Witnesses:

A. PARKEnSMITH, M. G. CRAWFORD. 

